Date   : Tue, 15 Sep 2009 15:09:46 +0100
From   : pete@... (Pete Turnbull)
Subject: Mouldy beebs!

On 15/09/2009 11:33, Rick Murray wrote:
> Neil F wrote:
> 
>> Been doing it for years now when the keytops start to look mucky. Never
>  > had any problems.
> 
> All the keys clicking against each other - no damage to the 
> printed/stamped/whatever legends?

Beeb keytops -- and most other keytops from other than the cheapest 
keyboards -- use what's called a double-shot moulding.  The legend is 
moulded into the keytops, and if you look from the back, you'll see the 
two layers.  You'd make a hole in the top before you rubbed away the 
legend.  Some others are engraved and filled -- not very common these 
days but still robust -- and only the cheapest cr*p are silkscreened.

-- 

Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York